Together with predation, it is the most important density-dependent factor in regulating population growth.
在调节种群增长方面，它与捕食一起是最重要的密度制约因子。
The main effect factors of the quantity change of rodent were "nondensity dependent factor" and the density dependent factors had some effect also.
主要影响因素是非密度制约因素，但密度制约因素亦有一定影响。
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